Man-o-war, support tripod walker unit. I'm going to do falx with a bit of a "twisted magical technology" vibe.

The central stalk is where the 'eye' is situated, on the sides it is armed with twin starburst cannons.

Also, a fancy air support unit:

The Phoenix. Agile, with a frontal flamer, it is piloted by daredevil falx who swoop into infantry lines and set them on fire. Also armed with two bombs. The pilot is rather fugly, I was low on parts, it will be replaced sometimes.

The chaos of the last campaign will be a breeze compared to what's gonna happen next if these guys (amongst others) show up, not to mention we already have 'the Destroyer' to take care of the carnage-level